I too would love to one day try the DC4, however the price point just kept me at bay for now. I have recently upgraded all my power cables to Shunyata NR series (plugged into a Isotek Aquarius) with the Delta V2 NR for the Dave and found a very noticeable difference to my sound system. All the points @Ciggavelli called out I have experienced, but to what extent is it comparable to DC4 I wouldn't be able to comment due to not having one.Ciggavelli, congratulations on the power supply upgrades to your DAVE and the M Scaler. I’m a huge proponent of clean power in my listening chain because IMO it makes a huge difference, and is the most overlooked aspect when folks are putting their hi-fi systems together. I’m not swimming in the same deep audio gear waters as you sir, though I wouldn’t mind getting my feet a little wetter. I do use the adequately efficient Sbooster LPSU’s on my HMS/TT2 combo that are connected to the decent AudioQuest Niagara 1200 power conditioner, and which is plugged into the wall using an AQ Thunder power cable. I think if more folks thought about upgrading their power chains instead of searching for another flavour of DAC or upsampler, they’d be a lot happier with the audio gear that they already have.
So I second @bpcans that clean power makes a big difference to the system and worth looking into.